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Finding the Fourth Proportional to 109,353.15, 163,659.24 and 67,259.91

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Solution

The fourth proportional to 109,353.15, 163,659.24 and 67,259.91 is: 100,661.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,353.15 : 163,659.24 = 67,259.91 : x
  2. Step 2: Convert to fraction form
    109,353.15/163,659.24 = 67,259.91/x
  3. Step 3: Cross multiply
    109,353.15x = 163,659.24 × 67,259.91
  4. Step 4: Simplify right side
    109,353.15x = 11,007,705,753.07
  5. Step 5: Solve for x
    x = 11,007,705,753.07/109,353.15
  6. Step 6: Final answer
    x = 100,661.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.